# the first job here is part of the head, the third (but not the forth(!)) job can be backfilled   
# arrival time; job id == finish time; user estimated duration; number of required nodes; actual duration 
0 10.0 10 50 10 0 0 uid_1
1 13.0 3 60 3 0 0 uid_2
2 4.0 3 40 2 0 0 uid_3
4 10.1 6 10 6 0 0 uid_4
